These sure feet for the KLIMB dog training system from BLUE-9 are a great way to introduce and get your dog comfortable with the KLIMB. The non-skid plastic feet come in a set of four and are designed to be used in the place of the legs (especially if you plan on using the KLIMB without legs on a hard surface). When these posts are installed, the KLIMB will not slide providing a solid surface for your dog to jump on and off of. Note: The KLIMB itself is not included.